Comment 11 for bug 1394163

Revision history for this message
Seth Forshee (sforshee) wrote : Re: [Bug 1394163] Re: Unable to turn powersave for wlan0 off

On Sat, Nov 22, 2014 at 01:41:55AM -0000, Michael Heuberger wrote:
> Ok, understood. Well, I spotted the error in my dmesg output. There was
> something else trying to turn the powersave off which failed of course
> and an error was printed. That confused me.
>
> If I have power support disabled, then no entity should try to switch
> powersave off. This to prevent error pollution in the dmesg output.
> Looks like somewhere in the code an if-check is missing.

There are various PM scripts which might be trying to turn power save on
and off based on certain events (specifically applying or removing
external power). They can't really tell whether it was you which turned
off power save or if it was turned off due to an event, and I'm sure
they aren't smart enough to know about module options they should check.
The errors are safe to ignore.